Named Florence and Cecilia, the two Tunnel Boring Machines have been completed in Germany and are now ready to be shipped to the UK to begin the 10-mile-long Chiltern tunnel excavation.
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Prior to the arrival of the two tunnel boring machines, HS2 has completed the high headwall and ground reinforcement at the Chiltern tunnel site.
HS2 Ltd, the company responsible for developing the UK's new high-speed rail network, is asking the UK public to choose the names for the project's first two giant tunnel boring machines.